/Engine/Plugins/Online/OnlineFramework/Source/Party/Public/User/SocialUser.h
virtual void HandleSetNicknameComplete ( int32 LocalUserNum, const [FUniqueNetId](API\Runtime\CoreOnline\Online\FUniqueNetId) & FriendId, const [FString](API\Runtime\Core\Containers\FString) & ListName, const [FOnlineError](API\Plugins\OnlineSubsystem\FOnlineError) & Error )